Speckle Reduction by Summation of Higher Order Harmonic Images

  • I. Akiyama
  • H. Yamamoto
  • G. Ohashi
  • A. Ohya
Part of the Acoustical Imaging book series (ACIM, volume 27)

Abstract

Granular patterns called speckles appearing in ultrasonic echo images have become a contributing factor to deteriorated picture quality. Speckle is a kind of statistical noise that does not depend on histological distribution but it’s average size is dependent on duration and beam width of ultrasonic pulses.

Keywords

Graphite Agar Acoustics 

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6. References

  1. 1.
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    Wagner, R.F., Smith, S.W., Sandrik, J.M., and Lopez,H.:Statistics of speckle in ultrasound B-scans, IEEE Trans. Sonics Ultrasonics 30, (1983) 156–163.Google Scholar
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    Magnin, PA., von Ramm, O. T. and Thustone, F. L.:Frequency compounding for speckle contrast reduction in phased array images, Ultrasonic Imaging 4, (1982) 267–281.Google Scholar
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    Ohya, A., Yuta, S., Akiyama, I., Itoh, T., and Nakajima, M.:Speckle noise reduction using PM pulses, Acoustical Imaging 17, (1989) 295–302.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2004

Authors and Affiliations

  • I. Akiyama
    • 1
  • H. Yamamoto
    • 1
  • G. Ohashi
    • 2
  • A. Ohya
    • 3
  1. 1.Shonan Institute of TechnologyFujisawaJapan
  2. 2.Shizuoka UniversityHamamatsuJapan
  3. 3.University of TsukubaTsukubaJapan

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